/*
In Internet Explorer window.onblur event is implemented incorrectly (as opposed to Firefox/Mozilla browsers). It is wrongly fired when focus is switched between HTML elements *inside* a window.
Suppose you're trying to automatically close a popup window when focus is switched to another (main) window (a common task). As a result of the described bug, clicking on any element *inside* a popup window or trying to select something there will also close a popup.
http://codingforums.com/showthread.php?p=500127
Below is a workaround.
*/


var active_element;
var bIsMSIE;

function initiateSelfClosing() {
  if (navigator.appName == "Microsoft Internet Explorer") {
    active_element = document.activeElement;
    document.onfocusout = closeWnd;
    bIsMSIE = true;
  }
  else { window.onblur = closeWnd; }
}

function closeWnd() {
  if (window.opener != null) {
    if (bIsMSIE && (active_element != document.activeElement)) {
      active_element = document.activeElement;
    }
    else {
      window.close();
    }
  }
}